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[英]How can I use my data from a JSON string to populate dimple d3.js line chart?
[英]How to pass a Json String from mvc controller to a d3.js chart?
控制器:
public ActionResult JsonString()
{
var p = new Parser("ALL");
return Content(p.BuildJson());
}
JSON:
[{"date":"28-Feb-14","count":2},{"date":"27-Feb-14","count":4},{"date":"26-Feb-14","count":4},{"date":"25-Feb-14","count":5},{"date":"24-Feb-14","count":5},{"date":"23-Feb-14","count":2},{"date":"22-Feb-14","count":7},{"date":"21-Feb-14","count":2},{"date":"20-Feb-14","count":3},{"date":"19-Feb-14","count":2},{"date":"18-Feb-14","count":6},{"date":"17-Feb-14","count":2},{"date":"16-Feb-14","count":2},{"date":"15-Feb-14","count":0},{"date":"14-Feb-14","count":2},{"date":"13-Feb-14","count":5},{"date":"12-Feb-14","count":4},{"date":"11-Feb-14","count":3},{"date":"10-Feb-14","count":4},{"date":"9-Feb-14","count":2},{"date":"8-Feb-14","count":5},{"date":"7-Feb-14","count":4},{"date":"6-Feb-14","count":12},{"date":"5-Feb-14","count":2},{"date":"4-Feb-14","count":0},{"date":"3-Feb-14","count":0},{"date":"2-Feb-14","count":0},{"date":"1-Feb-14","count":0},{"date":"31-Jan-14","count":0},{"date":"30-Jan-14","count":0}]
使用Javascript:
$.ajax({
url: '@Url.Action("JsonString", "Dashboard")',
type: 'GET',
success: function (dat) {
var data = jQuery.parseJSON(dat);
var margin = { top: 20, right: 20, bottom: 30, left: 50 },
width = @graphWidth - margin.left - margin.right,
height = @graphHeight - margin.top - margin.bottom;
var parseDate = d3.time.format("%d-%b-%y").parse;
var x = d3.time.scale()
.range([0, width]);
var y = d3.scale.linear()
.range([height, 0]);
var xAxis = d3.svg.axis()
.scale(x)
.orient("bottom");
var yAxis = d3.svg.axis()
.scale(y)
.orient("left");
var line = d3.svg.line()
.x(function (d) { return x(d.date); })
.y(function (d) { return y(d.count); });
var svg = d3.select("#chart").append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
d3.json = data; ??????????????????????????????????????????????????
x.domain(d3.extent(data, function(d) { return d.date; }));
y.domain(d3.extent(data, function(d) { return d.count; }));
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis);
svg.append("g")
.attr("class", "y axis")
.call(yAxis)
.append("text")
.attr("transform", "rotate(-90)")
.attr("y", 6)
.attr("dy", "1.21em")
.style("text-anchor", "end")
.style("font-size", "18px")
.text("Occurences");
svg.append("path")
.datum(data)
.attr("class", "line")
.attr("d", line);
svg.append("text")
.attr("x", (width / 2))
.attr("y", 50 - (margin.top))
.attr("text-anchor", "middle")
.style("font-size", "26px")
.style("text-decoration", "underline")
.text("Incidents/Time");
alert(data);
alert(dat);
}
您需要做的只是以下幾點:
public ActionResult JsonString()
{
var p = new Parser("ALL");
return Content(p.BuildJson(), "application/json");
}
提供p.BuildJson()
返回json字符串,而不指定默認為text/plain
內容類型。
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